Intravascular modalities for detection of vulnerable plaque: Current status

Briain D. MacNeill, Harry C. Lowe, Masamichi Takano, Valentin Fuster, Ik Kyung Jang

Research output: Contribution to journalShort surveypeer-review

190 Scopus citations

Abstract

Progress in the diagnosis, treatment, and prevention of atherosclerotic coronary artery disease is dependent on a greater understanding of the mechanisms of coronary plaque progression. Autopsy studies have characterized a subgroup of high-risk, or vulnerable, plaques that result in acute coronary syndromes or sudden cardiac death. These angiographically modest plaques share certain pathologic characteristics: a thin, fibrous cap, lipid-rich core, and macrophage activity. Diagnostic techniques for vulnerable-plaque detection, including serologic markers and noninvasive and invasive techniques, are needed. Recent advances in intravascular imaging have significantly improved the ability to detect high-risk, or vulnerable, plaque in vivo by using various features of plaque vulnerability as methods of identification. The characteristic anatomy of a thin, fibrous cap overlying a lipid pool has promoted high-resolution imaging, such as intravascular ultrasound, optical coherence tomography, and intracoronary magnetic resonance. The lipid-rich core is identifiable by angioscopically detected color changes on the plaque surface or by its unique absorption of energy, or "Raman shift," of its cholesterol core, driving coronary spectroscopy. Finally, temperature heterogeneity arising at foci of plaque inflammation has prompted the development of intracoronary thermography. In this review, we will discuss these techniques, their relative advantages and limitations, and their potential clinical application.

Original languageEnglish
Pages (from-to)1333-1342
Number of pages10
JournalArteriosclerosis, Thrombosis, and Vascular Biology
Volume23
Issue number8
DOIs
StatePublished - 1 Aug 2003

Keywords

  • Acute coronary syndrome
  • Atherosclerosis
  • Coronary imaging

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